Home > Super Duplex Screws
Request For Our Latest Prices On Super Duplex Screws in Tunis, Tunisia!
Lina Fasteners, a reputable manufacturer and supplier located in Tunis, Tunisia, has earned a solid reputation for providing high-performance fastening solutions designed for tough industrial settings. One of their standout products is the Super Duplex Screws, crafted for remarkable corrosion resistance and outstanding mechanical strength. These screws are made using cutting-edge techniques and rigorous quality controls, making them perfect for industries that demand reliability in extreme conditions, such as marine engineering, chemical processing, desalination, and offshore structures. Lina Fasteners is committed to maintaining its strong reputation by delivering durable, precision-engineered fasteners that adhere to international standards, ensuring long-lasting performance in critical applications.
Super Duplex Screws from Lina Fasteners are generally made from materials like UNS S32750 or S32760, which are recognized for their unique dual-phase microstructure of austenite and ferrite. Their composition boasts high levels of chromium (24–26%), molybdenum (3–4%), and nitrogen, which together provide exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, these screws deliver impressive tensile and yield strength, excellent fatigue resistance, and remarkable toughness, even in challenging environments. Their sturdy design guarantees reliable performance in high-pressure, high-temperature, and corrosive conditions, making them perfect for heavy-duty applications.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Super Duplex Screws from Lina Fasteners find extensive use in industries where extreme strength and corrosion resistance are crucial. In the marine and offshore sectors, they play a vital role in securing structural components that are constantly exposed to seawater and high salinity. Chemical and petrochemical plants depend on them for assembling equipment, pipelines, and reactors that handle corrosive materials. They are also indispensable in desalination plants, pressure vessels, heat exchangers, and high-performance pumps.
At Lina Fasteners, We make sure that our Super Duplex Steel Screws are packed with the utmost of precaution. Every screw is covered separately to avoid any damages, rust or any other contaminant that may affect the screw during transportation. We employ sturdy cartons and provide customized packaging services depending on the client’s requirements. We ensure that our products are well packed and labeled to enhance identification and handling to ensure that the end consumer receives our products in the best condition.
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
©2024 Lina Fasteners All Rights Reserved.
